Low-noise air conditioner heat exchange system and low-noise air conditioner

Abstract

The utility model discloses a low-noise air conditioner heat exchange system and a low-noise air conditioner, the low-noise air conditioner heat exchange system is used in the air conditioner, and a static pressure cavity is arranged in the low-noise air conditioner heat exchange system, so that the noise at the position of an air outlet when the air conditioner heat exchange system works is reduced. The low-noise air conditioner heat exchange system comprises a first heat exchange cavity, a first heat exchanger, a first heat exchange fan, a static pressure cavity and a first airflow outlet. The first heat exchange cavity is isolated from the static pressure cavity; the static pressure cavity comprises an airflow outlet of the first heat exchange fan at one end and a first airflow outlet at the other end; the first heat exchange fan sucks heat exchange air flow from the first heat exchange cavity, the heat exchange air flow is blown out into the static pressure cavity through the air flow blowing-out opening of the first heat exchange fan and is blown out through the first air flow outlet, and the flowing speed of the heat exchange air flow in the static pressure cavity is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, in particular to a low-noise air-conditioning heat exchange system and a low-noise air conditioner. Background Art

[0002] With the rise of the RV tourism culture, RVs have become the first choice for more and more people to travel. Of course, not only RVs, but also with the upgrading of related technologies and cost reduction in the automotive manufacturing industry, vehicles are endowed with more functions in addition to transportation, such as temporary duty stations, blood donation stations, temporary relief stations, etc., most of which are modified from vehicles. These vehicles, different from conventional cars, need to ensure the normal operation of some functions on the vehicle after parking, such as air conditioners.

[0003] In related patent documents such as the patent with the publication and announcement numbers of CN205573727U (hidden duct type RV air conditioner) and CN206383782U (air outlet component of the condensation system, condensation system and hidden RV air conditioner), etc., the air conditioners used on RVs are all publicly disclosed. However, the focus of the research and development of air conditioners in these documents is mainly on how to achieve a hidden installation of the air conditioner on the vehicle.

[0004] In the prior art, vehicle users not only require the air conditioner to occupy a small space after being installed on the vehicle and be able to achieve a hidden installation, but also require the air conditioner to be able to maintain silence or have as little noise as possible when working. The ability of the air conditioner to maintain low noise or silence during operation is an important indicator for judging the quality of an air conditioner and also an important indicator for people to choose it. Moreover, the ability of the air conditioner to maintain low noise or silence during operation is also an important prerequisite for ensuring the functions of these vehicles in addition to transportation. Summary of the Utility Model

[0005] In order to overcome at least one of the above-mentioned defects of the prior art, one of the purposes of the present utility model is to provide a low-noise air-conditioning heat exchange system, which reduces the noise at the air outlet position when the air-conditioning heat exchange system is working by setting a static pressure chamber.

[0006] In order to overcome at least one of the above-mentioned defects of the prior art, one of the purposes of the present utility model is to provide a low-noise air conditioner, which uses the aforementioned low-noise air-conditioning heat exchange system. This low-noise air-conditioning heat exchange system can be used on the evaporation side and / or the condensation side of the air conditioner, effectively reducing the noise at the air outlet position when the air conditioner is working.

[0007] The technical solution adopted by the present utility model to solve its problems is:

[0008] A low-noise air-conditioning heat exchange system includes a first heat exchange chamber, a first heat exchanger, a first heat exchange fan, a static pressure chamber and a first air flow outlet;

[0009] The first heat exchange chamber is isolated from the static pressure chamber, and the first heat exchanger is installed in the first heat exchange chamber;

[0010] The static pressure chamber includes a first end and a second end. The first end is close to the air outlet of the first heat exchange fan, and the first air outlet is installed at the second end;

[0011] The first heat exchange fan sucks the heat exchange air flow that has passed through the first heat exchanger from the first heat exchange chamber, and the heat exchange air flow is blown out from the air outlet of the first heat exchange fan into the static pressure chamber. The heat exchange air flow moves from the first end to the second end in the static pressure chamber and is blown out from the first air outlet; the flow velocity of the heat exchange air flow decreases in the static pressure chamber.

[0012] Further: The cross-sectional area of the static pressure chamber gradually increases from the first end to the second end. Further: The static pressure chamber is arranged in a flared shape from the first end to the second end.

[0013] Further: The effective air outlet area of the first air outlet is smaller than the cross-sectional area of the second end.

[0014] Further: The direction from the first end to the second end is the first direction, and the direction in which the heat exchange air flow blown out by the first heat exchange fan enters the static pressure chamber is the second direction, and the second direction is basically the same as the first direction.

[0015] Further: The first heat exchange fan is installed outside the first heat exchange chamber, and the air suction port of the first heat exchange fan is communicated with the first heat exchange chamber;

[0016] A second air guiding chamber is arranged outside the air outlet of the first heat exchange fan. The second air guiding chamber is communicated with the first end of the static pressure chamber, and the second air guiding chamber guides the heat exchange air flow blown out from the air outlet of the first heat exchange fan into the static pressure chamber.

[0017] Further: The first heat exchange fan is installed in the second air guiding chamber. The second air guiding chamber is cylindrical, and the first end of the static pressure chamber is connected to the outer peripheral surface of the cylindrical second air guiding chamber and is communicated with the second air guiding chamber.

[0018] Further: The first heat exchange fan is a backward centrifugal fan or a forward centrifugal fan.

[0019] Further: The first heat exchange chamber is arranged above or below the static pressure chamber.

[0020] Further: The first air outlet includes a plurality of independent air outlets.

[0021] Further: The first heat exchanger is an evaporator or a condenser, and the first heat exchange fan is an evaporation fan or a condensation fan.

[0022] A low-noise air conditioner includes the aforementioned low-noise air-conditioning heat exchange system, and the low-noise air-conditioning heat exchange system is arranged on the evaporation side and / or the condensation side of the air conditioner.

[0023] Further: The low-noise air-conditioning heat exchange system is arranged on the evaporation side of the air conditioner, the first heat exchanger is an evaporator, and the first heat exchange fan is an evaporation fan.

[0024] Further: The condensation side of the air conditioner includes a second heat exchange chamber, and the second heat exchange chamber is isolated from both the first heat exchange chamber and the static pressure chamber; a second air flow inlet and a second air flow outlet are connected to the second heat exchange chamber, a condenser and a condensation fan are arranged inside the second heat exchange chamber, and the condenser is communicated with the evaporator through a pipeline;

[0025] The condensation fan sucks the medium air flow from the second air flow inlet, the medium air flow enters the condensation fan after passing through the condenser, and is blown out by the condensation fan;

[0026] The air flow blow-out port of the condensation fan is communicated with the second air flow outlet, and the medium air flow passes through the condensation fan and is blown out from the second air flow outlet.

[0027] Further, the low-noise air-conditioning heat exchange system further includes a box body, and the first heat exchange chamber, the second heat exchange chamber and the static pressure chamber are all arranged inside the box body;

[0028] The second air flow inlet is arranged on the bottom surface or the side surface or the top surface of the box body;

[0029] The second air flow outlet is arranged on the bottom surface or the side surface or the top surface of the box body; and the second air flow inlet and the second air flow outlet are arranged with a height difference in the height direction of the box body;

[0030] A first air flow inlet is arranged on the first heat exchange chamber, and the first air flow inlet is arranged on the side surface or the top surface of the box body;

[0031] The first air flow outlet is arranged on the side surface or the top surface of the box body, and the first air flow outlet includes a plurality of independent air outlets, and each of the air outlets is located on the same surface or different surfaces of the box body.

[0032] In summary, a low-noise air-conditioning heat exchange system provided by the present utility model has the following technical effects:

[0033] 1. A static pressure chamber is provided inside the air conditioner. The flow velocity of the heat exchange air flow decreases when flowing in the static pressure chamber. When the air conditioner is operating, the heat exchange air flow blows out through the static pressure chamber. When the heat exchange air flow enters the static pressure chamber and flows from the first end to the second end, since the internal space of the static pressure chamber gradually increases from the first end to the second end, the flow velocity of the heat exchange air flow will gradually decrease. As the flow velocity of the heat exchange air flow decreases, the heat exchange air flow is temporarily stored in the static pressure chamber, converting part of the kinetic energy of the heat exchange air flow into static energy and converting part of the dynamic pressure of the heat exchange air flow into static pressure. Finally, it is evenly blown out from the first air outlet. At this time, the noise generated by the heat exchange air flow is also greatly reduced, achieving low noise during the operation of the air conditioner unit.

[0034] 2. Inside the air conditioner, the direction (the second direction) in which the heat exchange air flow blown out by the first heat exchange fan enters the static pressure chamber is basically the same as the direction (the first direction) in which the heat exchange air flow flows from the first end to the second end in the static pressure chamber. That is, the heat exchange air flow blown out from the air flow outlet of the first heat exchange fan enters the static pressure chamber and, without substantially changing the original flow direction, is blown out through the first air outlet. During the process of the heat exchange air flow entering the static pressure chamber, the heat exchange air flow basically does not collide with the inner wall of the static pressure chamber, reducing the noise of the heat exchange air flow. At the same time, the heat exchange air flow converts part of its kinetic energy into static energy in the static pressure chamber, further reducing the noise of the heat exchange air flow.

[0035] 3. If the cross-sectional area of the static pressure chamber gradually increases from the first end to the second end, or the static pressure chamber is arranged in a flared shape from the first end to the second end, or the effective air outlet area of the first air outlet is smaller than the cross-sectional area of the second end, it can all make the flow velocity of the heat exchange air flow entering the static pressure chamber decrease from the first end to the second end. As the flow velocity of the heat exchange air flow decreases, the heat exchange air flow is temporarily stored in the static pressure chamber, converting part of the kinetic energy of the heat exchange air flow into static energy and converting part of the dynamic pressure of the heat exchange air flow into static pressure. Finally, it is evenly blown out from the first air outlet. At this time, the noise generated by the heat exchange air flow is also greatly reduced, achieving low noise during the operation of the air conditioner unit.

[0036] 4. Since the effective air outlet area of the first air outlet is smaller than the cross-sectional area of the second end, after the heat exchange air flow blown out by the first heat exchange fan enters the static pressure chamber, it can be temporarily stored in the static pressure chamber. The static pressure chamber converts part of the dynamic pressure of the heat exchange air flow into static pressure, increasing the air flow pressure in the static pressure chamber, which is conducive to the heat exchange air flow being blown to a farther distance when blowing out from the first air outlet, improving the temperature adjustment effect of the air conditioner.

[0037] In summary, the low-noise air conditioner provided by the present utility model has the following technical effects:

[0038] 1. The evaporation side and / or the condensation side inside the air conditioner can both use the aforementioned low-noise air conditioner heat exchange system, making the noise at the air outlet small during the operation of the air conditioner.

[0039] 2. The evaporation side in the air conditioner uses the aforementioned evaporation side in the air conditioner to reduce the overall volume of the air conditioner, while also ensuring low noise when the air conditioner is operating.

[0040] 3. The second air flow inlet and the second air flow outlet in the air conditioner are arranged with a height difference in the height direction of the box body to avoid interference between air intake and air outlet on the condensation side, and to avoid the second air flow inlet from inhaling a large amount of gas discharged from the second air flow outlet as much as possible to ensure the heat exchange efficiency of the condenser. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 This is a schematic diagram of the external structure of Example 1 of a low-noise air conditioner of the utility model.

[0042] Figure 2 Schematic diagram of the internal structure of the low-noise air conditioner of Example 1.

[0043] Figure 3 This is a top view of the internal structure of the low-noise air conditioner of Example 1.

[0044] Figure 4 This is a schematic diagram of the external structure of Example 2 of a low-noise air conditioner of the utility model.

[0045] Figure 5 Schematic diagram of the internal structure of the low-noise air conditioner of Example 2.

[0046] Figure 6 This is a top view of the internal structure of the low-noise air conditioner of Example 2.

[0047] Figure 7 This is a schematic diagram of the external structure of Example 3 of a low-noise air conditioner of the utility model.

[0048] Figure 8 Schematic diagram of the internal structure of the low-noise air conditioner of Example 3.

[0049] Figure 9 This is a top view of the internal structure of the low-noise air conditioner of Example 3.

[0050] Figure 10 This is a schematic diagram of the external structure of Example 4 of a low-noise air conditioner of the utility model.

[0051] Figure 11 Schematic diagram of the internal structure of the low-noise air conditioner of Example 4.

[0052] Figure 12 This is a top view of the internal structure of the low-noise air conditioner of Example 4.

[0053] The meanings of the reference numerals are as follows:

[0054] A, the first heat exchange chamber; B, the second heat exchange chamber; D, the second air guide chamber;

[0055] 10. The static pressure chamber; 101. The first end; 102. The second end;

[0056] 7. The first heat exchange fan; 70. The air flow outlet of the first heat exchange fan;

[0057] 1. The upper box body; 2. The lower box body; 3. The cavity cover; 4. The first air flow outlet; 41. The air outlet; 5. The first air flow inlet; 6. The first heat exchanger; 8. The second air flow inlet; 9. The condenser; 11. The condensation fan; 12. The second air flow outlet. Specific embodiments

[0058] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0059] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0060] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0061] Refer to Figure 1 , which discloses a schematic external structure diagram of a low-noise air conditioner. Refer to Figure 2 , which discloses a schematic internal structure diagram of a low-noise air conditioner. In Figure 2 , a low-noise air conditioner heat exchange system including a static pressure chamber 10 is adopted inside the air conditioner. Figure 2 In , the low-noise air conditioner heat exchange system is installed on the evaporation side of the air conditioner. Of course, according to the heat exchange principle of the air conditioner, the low-noise air conditioner heat exchange system can also be used on the condensation side of the air conditioner, or the low-noise air conditioner heat exchange system can be used on both the evaporation side and the condensation side of the air conditioner.

[0062] The low-noise air-conditioning heat exchange system including a static pressure chamber 10 is adopted in the air conditioner, which can greatly reduce the noise at the air outlet of the air conditioner. If the low-noise air-conditioning heat exchange system is used on the evaporation side, the noise at the evaporation-side air outlet is reduced; if the low-noise air-conditioning heat exchange system is used on the condensation side, the noise at the condensation-side air outlet is reduced; if the evaporation side and the condensation layer of the air conditioner both use the low-noise air-conditioning heat exchange system, the noise at the air outlets of the evaporation side and the condensation side of the air conditioner is effectively reduced. This enables the air conditioner to operate with low noise and improves the comfort of using the air conditioner.

[0063] Of course, it should be noted here that the so-called "evaporation side", "evaporator", "condensation side", and "condenser" in this solution all refer to the internal components of the air conditioner. According to the general naming convention, the part installed indoors or the part that exchanges heat for indoor temperature adjustment is called the "evaporation side", and correspondingly, the part installed outdoors or the part that exchanges heat with outdoor air is called the "condensation side". When the air conditioner operates, in the cooling mode, the evaporator absorbs the indoor heat, and the condenser releases heat to the outside. In the heating mode, the air conditioner changes the refrigerant flow direction through the internal four-way reversing valve, so that the functions of the evaporator and the condenser are interchanged, but the installation positions of the evaporator and the condenser cannot be interchanged. At this time, the evaporator located indoors releases heat to the indoor, and the condenser located outdoors absorbs outdoor heat.

[0064] To facilitate the understanding of the structure and function of the low-noise air-conditioning heat exchange system by those skilled in the art, the structure and function of the low-noise air-conditioning heat exchange system will be introduced in detail below.

[0065] Refer to Figure 8 or Figure 11 , in these figures, although the low-noise air-conditioning heat exchange system is mainly installed on the evaporation side of the air conditioner, this does not affect the understanding and description of the structure of the low-noise air-conditioning heat exchange system.

[0066] In the solution of the present utility model, a low-noise air-conditioning heat exchange system includes a first heat exchange chamber A, a first heat exchanger 6, a first heat exchange fan 7, a static pressure chamber 10, and a first air outlet 4.

[0067] The first heat exchange chamber A is isolated from the static pressure chamber 10, and the first heat exchanger 6 is installed in the first heat exchange chamber A.

[0068] The static pressure chamber 10 includes a first end 101 and a second end 102. The first end 101 is close to the air blowing outlet 70 of the first heat exchange fan, and the second end 102 is installed with the first air outlet 4.

[0069] The first heat exchange fan 7 sucks in the heat exchange air flow that has been heat-exchanged by the first heat exchanger 6 from the first heat exchange chamber A. The heat exchange air flow is blown out from the air flow outlet 70 of the first heat exchange fan into the static pressure chamber 10. The heat exchange air flow moves from the first end 101 to the second end 102 in the static pressure chamber 10 and is blown out from the first air flow outlet 4. The flow velocity of the heat exchange air flow decreases in the static pressure chamber 10.

[0070] Based on the above scheme, the heat exchange air flow is blown into the static pressure chamber 10 by the first heat exchange fan 7. At this time, the flow velocity of the heat exchange air flow entering the static pressure chamber decreases. The decrease in the flow velocity of the heat exchange air flow realizes the conversion of part of the kinetic energy of the heat exchange air flow into static energy, and the conversion of part of the dynamic pressure of the heat exchange air flow into static pressure. Finally, it is evenly blown out from the first air flow outlet. At this time, the noise generated by the heat exchange air flow is also greatly reduced, realizing low noise during the operation of the air conditioner unit. Moreover, when the heat exchange air flow enters the static pressure chamber, it can be temporarily stored in the static pressure chamber and then evenly blown out from the first air flow outlet. During this process, the heat exchange air flow is temporarily stored in the static pressure chamber, the flow velocity of the heat exchange air flow decreases, part of the kinetic energy of the heat exchange air flow is converted into static energy, part of the dynamic pressure of the heat exchange air flow is converted into static pressure, and finally it is evenly blown out from the first air flow outlet. At this time, the noise generated by the heat exchange air flow is also greatly reduced, realizing low noise during the operation of the air conditioner unit.

[0071] The static pressure chamber 10 converts the kinetic energy of the heat exchange air flow into static energy. When the heat exchange air flow is blown out from the first heat exchange fan, it usually has a relatively high wind speed and high dynamic pressure. The function of the static pressure chamber 10 is to introduce the heat exchange air flow into a closed cavity, so that the heat exchange air flow decelerates in the cavity, thereby converting kinetic energy into static energy. In the static pressure chamber 10, the flow velocity of the heat exchange air flow decreases, and the air flow pressure increases to form static pressure.

[0072] When the first heat exchange fan 7 generates a high-speed air flow, corresponding noise will be generated. The static pressure chamber 10 reduces the speed of the high-speed air flow, thereby reducing the noise generated by the air flow. This enables the system to greatly improve the environmental comfort after being applied to the air conditioner.

[0073] The setting of the static pressure chamber 10 enables the heat exchange air flow to decelerate and be evenly distributed in the static pressure chamber, so that the heat exchange air flow sent out from the first air flow outlet is more stable and uniform. After the system is applied to the air conditioner, it can not only improve the operating efficiency of the air conditioner, but also ensure the temperature uniformity in the temperature-controlled area after the system is applied to the evaporation side of the air conditioner. For an air conditioner, the evaporation side air supply distance of the air conditioner is an important performance index. The static pressure chamber 10 increases the static pressure of the heat exchange air flow, so that the heat exchange air flow has a greater thrust when being sent out, and thus can cover a farther distance.

[0074] After the body is applied to the evaporation side of the air conditioner, the temperature-controlled air flow sent out from the first air outlet is uniform and has a relatively long distance, which can avoid the occurrence of temperature dead zones or excessive temperature differences in the area to be temperature-controlled. Moreover, the sent temperature-controlled air flow is softer, which can effectively avoid the flying of dust particles, improve the body feeling comfort and ensure the cleanliness of the indoor air. In addition, the static pressure chamber 10 can reduce the resistance of components such as pipelines and air outlets in the system, making the air conditioning system more energy-saving and efficient. This is of great significance for reducing system energy consumption and extending the service life of equipment.

[0075] In the above technical solution, if the low-noise air-conditioning heat exchange system is installed on the evaporation side of the air conditioner, when the air conditioner is working, the heat exchange air flow blown out from the static pressure chamber is the temperature-controlled air flow for temperature-controlling the area to be temperature-controlled. As Figure 2 shown, the dotted line trajectory with arrows is the movement trajectory of the temperature-controlled air flow. Generally, the air in the area to be temperature-controlled enters the first heat exchange chamber A under the action of the first heat exchange fan 7. The air entering the first heat exchange chamber A is temperature-controlled through the first heat exchanger 6 to obtain the temperature-controlled air flow. Then the temperature-controlled air flow is blown out by the first heat exchange fan 7 and enters the static pressure chamber 10, and finally is blown out from the first air outlet 4 communicated with the static pressure chamber 10 to the area to be temperature-controlled to temperature-control the area to be temperature-controlled, that is, to raise or lower the temperature of the area to be temperature-controlled, realizing the function of the air conditioner.

[0076] In the above technical solution, if the low-noise air-conditioning heat exchange system is installed on the condensation side of the air conditioner, when the air conditioner is working, generally the first heat exchange fan inhales air, and the first heat exchanger exchanges heat with the air, absorbing the heat in the air or releasing heat to the air. The air is cooled or heated through the first heat exchanger to obtain the heat exchange air flow after heat exchange. Then the first heat exchange fan blows out the heat exchange air flow into the static pressure chamber, and then blows it out through the first air outlet communicated with the static pressure chamber and into the environment isolated from the area to be temperature-controlled. At this time, the first heat exchanger is a condenser, and the refrigerant in the condenser is heated or cooled and then transported to the evaporator on the evaporation side.

[0077] In the technical solution of the present utility model, in order to reduce the flow velocity of the heat exchange air flow in the static pressure chamber, the structure of the static pressure chamber can be: the cross-sectional area of the static pressure chamber 10 gradually increases from the first end 101 to the second end 102. The heat exchange air flow is blown into the static pressure chamber 10 by the first heat exchange fan 7. Since the cross-sectional area of the static pressure chamber 10 gradually increases from the first end 101 to the second end 102, at this time, the flow velocity of the heat exchange air flow entering the static pressure chamber decreases. The decrease in the flow velocity of the heat exchange air flow realizes the conversion of part of the kinetic energy of the heat exchange air flow into static energy, and the conversion of part of the dynamic pressure of the heat exchange air flow into static pressure, and finally is evenly blown out from the first air outlet. At this time, the noise generated by the heat exchange air flow is also greatly reduced, realizing the low noise of the air-conditioning unit during operation.

[0078] In the technical solution of the present utility model, in order to reduce the flow velocity of the heat exchange air flow in the static pressure chamber, the structure of the static pressure chamber can also be: the static pressure chamber 10 is arranged in a flared shape from the first end 101 to the second end 102. The cross-sectional area of the flared static pressure chamber 10 gradually increases from the first end 101 to the second end 102, realizing the noise reduction effect of the static pressure chamber on the heat exchange air flow. At the same time, setting the static pressure chamber in a flared shape simplifies the structure of the static pressure chamber, facilitates the layout of the static pressure chamber, reduces the installation and manufacturing costs of the low-noise air-conditioning heat exchange system, and also reduces the surface in contact with the air flow in the static pressure chamber, further achieving the purpose of reducing the noise of the heat exchange air flow.

[0079] Based on the above technical solution, as Figure 3 or Figure 6 or Figure 9 or Figure 12 shown, the inner side surface of the static pressure chamber close to the first heat exchange chamber is inclined outward, so that the static pressure chamber forms a gradually flared shape. The flared shape of the static pressure chamber is beneficial to improving the ability of the static pressure chamber to reduce the air flow velocity and make the air flow uniform, and also helps to reduce the turbulence and vortices of the heat exchange air flow. When this system is applied to the evaporation side of an air conditioner, it can effectively reduce the energy loss in the temperature-regulating gas and improve the refrigeration and cooling efficiency of the air conditioner.

[0080] In addition, the gradually flared shape of the static pressure chamber further plays a role in slowing down the air flow velocity. The heat exchange air flow in the static pressure chamber flows from the first end to the second end, and the flow area of the heat exchange air flow gradually increases, and the air flow velocity decreases accordingly, making the air flow more stable and reducing the noise and vibration caused by too fast a speed. In addition, the gradually flared design of the static pressure chamber also helps to improve the pressure resistance of the static pressure chamber. Since the volume of the static pressure chamber increases, it can accommodate more gas, thereby increasing the pressure-bearing capacity of this system. This is particularly important for a system operating under high-pressure or high-load conditions, as it can ensure the stability and reliability of the system.

[0081] In the technical solution of the present utility model, in order to reduce the flow velocity of the heat exchange air flow in the static pressure chamber, the structure of the static pressure chamber can also be: the effective air outlet area of the first air outlet 4 is smaller than the cross-sectional area of the second end. In this technical solution, the effective air outlet area of the first air outlet 4 is smaller than the cross-sectional area of the second end 102. After the heat exchange air flow blown out by the first heat exchange fan enters the static pressure chamber, it can be temporarily stored in the static pressure chamber. The static pressure chamber converts part of the dynamic pressure of the heat exchange air flow into static pressure, and the air flow pressure in the static pressure chamber increases, which is beneficial for the heat exchange air flow to be blown out from the first air outlet and sent to a farther distance. If this low-noise air-conditioning heat exchange system is installed on the evaporation side of an air conditioner, when the heat exchange air flow is blown out from the first air outlet, it is sent to a farther distance, which is beneficial to improving the temperature-regulating effect of the air conditioner.

[0082] To achieve the function of reducing the air flow speed in the static pressure chamber, in addition to the above structures, the static pressure chamber also has the following structural features, all of which can further reduce the air flow speed. Refer to Figure 8 、 Figure 11 As shown, it is a structural situation of the static pressure chamber. At this time, the heat exchange air flow is blown into the static pressure chamber by the first heat exchange fan. However, the direction of the air flow in the static pressure chamber changes little. But through the design of other related structures of the static pressure chamber, it is also possible to reduce the air flow speed and reduce the air flow noise. The following will introduce this structural situation of the static pressure chamber in detail.

[0083] In the technical solution of the present invention, as Figure 3 、 Figure 6 、 Figure 9 and Figure 12 shown, the direction from the first end 101 to the second end 102 of the static pressure chamber is the first direction; the direction of the heat exchange air flow blown out by the first heat exchange fan and entering the static pressure chamber is the second direction; the second direction is basically the same as the first direction. Taking Figure 6 as an example, Figure 6 is the top view of Figure 5 . It can be clearly seen from Figure 6 the structure of the static pressure chamber 10 and the installation position of the first heat exchange fan 7. The air flow blown out by the first heat exchange fan basically enters the static pressure chamber from left to right, that is, the second direction is basically the horizontal right direction. The direction from the first end 101 to the second end 102 in the static pressure chamber 10 is also basically the horizontal right direction. So the first direction is basically the same as the second direction. Of course, the cross-sectional area of the static pressure chamber increases from the first end to the second end, or is in a flared shape. At this time, the first direction does not change completely, but the range of the change angle is not too large. Even if the flared range of the static pressure chamber from the first end to the second end is large, after the heat exchange air flow blown out by the first heat exchange fan enters the static pressure chamber, the movement direction of most of the air flow is basically the same as the second direction. For the air flow near the two side surfaces of the static pressure chamber, the direction changes a certain amount compared with the first direction, but it also changes after the air flow speed decreases after entering the static pressure chamber, and it can also achieve the effect of reducing the air flow speed and reducing the air flow noise. And for the air flow near the two side surfaces of the static pressure chamber, most of the air flow direction is also basically from left to right, so the second direction is basically the same as the first direction.

[0084] Based on the above technical solution, the second direction is basically the same as the first direction, that is, the heat exchange air flow blown out from the air flow outlet of the first heat exchange fan enters the static pressure chamber and is blown out through the first air outlet without basically changing the original flow direction. During the process of the heat exchange air flow entering the static pressure chamber, the heat exchange air flow basically does not collide with the inner wall of the static pressure chamber, reducing the noise of the heat exchange air flow. At the same time, the heat exchange air flow converts part of its kinetic energy into static energy in the static pressure chamber, further reducing the noise of the heat exchange air flow.

[0085] Based on the above technical solution, to make the second direction basically consistent with the first direction, the first heat exchange fan 7 is installed outside the first heat exchange chamber A, and the air suction port of the first heat exchange fan 7 is communicated with the first heat exchange chamber A.

[0086] Outside the air blowing outlet 70 of the first heat exchange fan, a second air guiding chamber D is provided. The second air guiding chamber D is communicated with the first end 101 of the static pressure chamber 10. The second air guiding chamber D guides the heat exchange air flow blown out from the air blowing outlet 70 of the first heat exchange fan into the static pressure chamber 10. The second air guiding chamber D plays a role in guiding the air flow, ensuring that the air flow enters the static pressure chamber along a predetermined path and direction, and decelerates in the static pressure chamber to reduce the air flow noise.

[0087] Based on the above technical solution, the first heat exchange fan 7 is installed in the second air guiding chamber D. The second air guiding chamber D is cylindrical. The first end 101 of the static pressure chamber 10 is connected to and communicated with the outer peripheral surface of the cylindrical second air guiding chamber D. The cylindrical shape of the second air guiding chamber D makes the heat exchange air flow blown out by the first heat exchange fan have low noise in the second air guiding chamber D, and is convenient for the connection and communication between the second air guiding chamber D and the static pressure chamber.

[0088] Based on the above technical solution, as shown in Figure 3 、 Figure 6 、 Figure 9 and Figure 12 , when the static pressure chamber has the above structure in the technical solution of the present utility model, the first heat exchange fan 7 is a backward centrifugal fan or a forward centrifugal fan. Figure 5 and Figure 11 , the first heat exchange fan 7 is a forward centrifugal fan. As shown in Figure 2 and Figure 8 , the first heat exchange fan 7 is a backward centrifugal fan.

[0089] The first heat exchange fan 7 is a forward centrifugal fan. The forward centrifugal fan has a small volume, a compact structure, and is convenient for installation and maintenance. The forward centrifugal fan has less working vibration and low working noise.

[0090] The first heat exchange fan 7 is a backward centrifugal fan. The backward centrifugal fan can generate a large air volume at a relatively low rotational speed. The backward vane design in the backward centrifugal fan helps to reduce the noise level during the operation of the fan, and is suitable for occasions with strict noise requirements.

[0091] In this technical solution, as shown in Figure 2 、 Figure 5 、 Figure 8 and Figure 11As shown, the first heat exchange chamber A is arranged above or below the static pressure chamber 10, which is convenient for the layout of the first heat exchange chamber A and the static pressure chamber 10. At the same time, the first heat exchange chamber A and the static pressure chamber 10 are arranged vertically. When the low-noise air-conditioning heat exchange system is installed on the evaporation side of the air conditioner, the lateral width of the static pressure chamber and the first heat exchange chamber A is greater than the height, and the positions of the first air flow outlet 4 and the first air flow inlet 5 can be adjusted and selected as needed to achieve long-distance air supply, or to facilitate the combined installation of this air conditioner with other furniture and equipment, etc. In this technical solution, in the two selectable models of the first heat exchange fan 7, the first heat exchange chamber A and the static pressure chamber 10 can both be arranged vertically, such as Figures 1 to 12 provides four embodiments of the combination of the static pressure chamber structure, the arrangement position of the static pressure chamber, and the two models of the first heat exchange fan.

[0092] In this technical solution, the low-noise air-conditioning heat exchange system is installed and applied in the air conditioner. The first heat exchanger 6 is an evaporator or a condenser, and the first heat exchange fan 7 is an evaporation fan or a condensation fan. Of course, according to the heat exchange principle of the air conditioner, the low-noise air-conditioning heat exchange system can be used on the condensation side of the air conditioner, or on the evaporation side of the air conditioner, or the low-noise air-conditioning heat exchange system can be used on both the evaporation side and the condensation side of the air conditioner. If the first heat exchanger 6 is an evaporator, then the first heat exchange fan 7 is an evaporation fan; if the first heat exchanger 6 is a condenser, then the first heat exchange fan 7 is a condensation fan.

[0093] Taking the low-noise air-conditioning heat exchange system arranged on the evaporation side of the air conditioner as an example, a structure of a low-noise air conditioner is provided. The low-noise air-conditioning heat exchange system is arranged on the evaporation side of the air conditioner, the first heat exchanger is an evaporator, and the first heat exchange fan is an evaporation fan, such as Figures 1 to 12 shown, are four embodiments of the air conditioner. In these embodiments, the low-noise air-conditioning heat exchange system is all used on the evaporation side of the air conditioner. Of course, according to the working principle of the low-noise air-conditioning heat exchange system and its installation and operation principle, it is also possible to directly install the low-noise air-conditioning heat exchange system in this solution on the condensation side of the air conditioner, and no creative changes need to be made during installation. If the low-noise air-conditioning heat exchange system is installed on the condensation side of the air conditioner, the first air flow outlet is directed towards the area isolated from the temperature-adjusting area, and the heat exchange gas discharged from the first air flow outlet is the waste gas after heat exchange by the first heat exchanger (condenser).

[0094] Based on the above, the low-noise air-conditioning heat exchange system is only used on the evaporation side of the air conditioner. A structure of the condensation side of a low-noise air conditioner is proposed below.

[0095] The condensation side of the air conditioner includes a second heat exchange chamber B, which is isolated from both the first heat exchange chamber A and the static pressure chamber 10. This ensures the normal operation of the condenser while preventing the impact of the condenser's operation on the evaporator and other components. A second air inlet 8 and a second air outlet 12 are connected to the second heat exchange chamber B. Inside the second heat exchange chamber B, there is a condenser 9 and a condensation fan 11. The condenser 9 is connected to the first heat exchanger 6 through a pipeline. The condensation fan 11 sucks in the medium air flow from the second air inlet 8. The medium air flow passes through the condenser 9 and then enters the condensation fan 11, and is blown out by the condensation fan 11. The air outlet of the condensation fan 11 is connected to the second air outlet 12, and the medium air flow passes through the condensation fan 11 and is blown out from the second air outlet 12.

[0096] Generally, an air conditioner adjusts the temperature of one area or several areas. The condensation fan 11 sucks in the medium air flow (which is air) from the second air inlet 8. After the air exchanges heat through the condenser 9, it is blown out by the condensation fan 11 into the external environment isolated from the area to be temperature-adjusted.

[0097] In this solution, the air conditioner also includes a cabinet, which is composed of an upper cabinet 1 and a lower cabinet 2 to facilitate the installation and maintenance of the internal structure of the air conditioner. The first heat exchange chamber A, the second heat exchange chamber B, and the static pressure chamber 10 are all located inside the cabinet. The condenser, evaporator, evaporation fan, and condensation fan are all placed inside the cabinet, realizing the integration of the evaporation side and the condensation side of the air conditioner. This enables the air conditioner to be small in size and occupy less installation space, and it can be installed on functional vehicles such as motorhomes and can be installed in a hidden manner as much as possible.

[0098] After the first heat exchange chamber A, the second heat exchange chamber B, and the static pressure chamber 10 are all located inside the cabinet, the second air inlet 8 is set on the bottom surface, side surface, or top surface of the cabinet; the second air outlet 12 is set on the bottom surface, side surface, or top surface of the cabinet, and the second air inlet 8 and the second air outlet 12 are arranged with a height difference in the height direction of the cabinet. A first air inlet is provided on the first heat exchange chamber. The first air inlet 5 is set on the side surface or top surface of the cabinet. The air entering through the first air inlet passes through the first heat exchanger and is sucked by the first heat exchange fan; the first air outlet 4 is set on the side surface or top surface of the cabinet, and the first air outlet 4 includes several independent air outlets 41, and each air outlet 41 is located on the same surface or different surfaces of the cabinet.

[0099] The second air inlet 8, the second air outlet 12, the first air inlet 5, and the first air outlet 4 can be selected with appropriate installation positions according to needs to ensure the convenience of the air conditioner's local installation and ensure that the air conditioner can obtain sufficient heat exchange medium during operation and can transport the temperature-adjusted gas to a farther position.

[0100] Preferably, the second airflow inlet 8 and the second airflow outlet 12 are arranged on the bottom surface of the box body, and a certain height difference is maintained between the second airflow inlet 8 and the second airflow outlet 12. The first airflow inlet 5 and the first airflow outlet 4 are arranged on the side of the box body, which facilitates the concealed installation of the air conditioner on functional vehicles such as RVs and the arrangement of pipelines when the air conditioner is installed.

[0101] In the air conditioner of this solution, the second air inlet 8 and the second air outlet 12 are arranged with a height difference in the height direction of the box body, so as to avoid interference between the air intake and the air outlet on the condensation side, and to avoid the second air inlet from sucking a large amount of gas discharged from the second air outlet as much as possible, so as to ensure the heat exchange efficiency of the condenser. The first air inlet 5 and the first air outlet 4 are arranged on the same surface of the box body, which is convenient for the arrangement of the air intake and air outlet pipelines on the evaporation side, and for making full use of the external space on one side of the box body.

[0102] In the air conditioner or low-noise air conditioning heat exchange system of this solution, the first air flow outlet 4 includes a plurality of independent air outlets. After the heat exchange air flow passes through the static pressure chamber, it is evenly discharged from each air outlet 41 of the first air flow outlet 4, reducing the air flow noise and increasing the air flow delivery distance. As needed, each air outlet 41 can be set on the side and top surface of the box body at the same time, increasing the downward air flow, realizing multi-angle and multi-directional temperature adjustment of the temperature-adjusted space, improving the temperature adjustment efficiency, reducing the temperature difference between the various areas in the temperature adjustment area, and improving comfort.

[0103] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A low-noise air conditioning heat exchange system, characterized in that: It includes a first heat exchange chamber, a first heat exchanger, a first heat exchange fan, a static pressure chamber and a first air flow outlet; The first heat exchange cavity is isolated from the static pressure cavity, and the first heat exchanger is installed in the first heat exchange cavity; The static pressure chamber comprises a first end and a second end, the first end is close to the airflow outlet of the first heat exchange fan, and the second end is provided with the first airflow outlet; The first heat exchange fan sucks the heat exchange airflow after heat exchange in the first heat exchanger into the first heat exchange chamber, and the heat exchange airflow is blown out into the static pressure chamber through the air flow outlet of the first heat exchange fan. The heat exchange airflow moves from the first end to the second end in the static pressure chamber and is blown out from the first air flow outlet; the flow velocity of the heat exchange airflow decreases in the static pressure chamber.

2. The low-noise air conditioning heat exchange system according to claim 1, characterized in that: The cross-sectional area of ​​the static pressure chamber gradually increases from the first end to the second end.

3. The low noise air conditioning heat exchange system according to claim 2, characterized in that: The static pressure chamber is arranged in a flared shape from the first end to the second end.

4. The low-noise air conditioning heat exchange system according to claim 1, characterized in that: An effective air outlet area of ​​the first air outlet is smaller than a cross-sectional area of ​​the second end.

5. The low-noise air conditioning heat exchange system according to claim 1, characterized in that: The direction from the first end to the second end is the first direction; the direction in which the heat exchange airflow blown out by the first heat exchange fan enters the static pressure chamber is the second direction; the second direction is substantially consistent with the first direction.

6. The low-noise air conditioning heat exchange system according to claim 5, characterized in that: The first heat exchange fan is installed outside the first heat exchange cavity, and the air flow inlet of the first heat exchange fan is connected to the first heat exchange cavity; A second air guide cavity is arranged outside the air flow outlet of the first heat exchange fan, and the second air guide cavity is connected to the first end of the static pressure cavity. The second air guide cavity guides the heat exchange air flow blown out of the air flow outlet of the first heat exchange fan into the static pressure cavity.

7. The low noise air conditioning heat exchange system according to claim 6, characterized in that: The first heat exchange fan is installed in the second air guide cavity, the second air guide cavity is cylindrical, and the first end of the static pressure cavity is connected to the outer peripheral surface of the second cylindrical air guide cavity and communicates with the second air guide cavity.

8. The low-noise air conditioning heat exchange system according to claim 5, characterized in that: The first heat exchange fan is a backward centrifugal fan or a forward centrifugal fan.

9. The low noise air conditioning heat exchange system according to claim 1, characterized in that: The first heat exchange chamber is arranged at the upper part or the lower part of the static pressure chamber.

10. The low-noise air conditioning heat exchange system according to claim 1, characterized in that: The first heat exchanger is an evaporator or a condenser, and the first heat exchange fan is an evaporating fan or a condensing fan.

11. A low noise air conditioner, characterized in that: It comprises the low-noise air conditioning heat exchange system according to any one of claims 1 to 10, wherein the low-noise air conditioning heat exchange system is arranged on the evaporation side and / or condensation side of the air conditioner.

12. The low noise air conditioner according to claim 11, characterized in that: The low-noise air conditioning heat exchange system is arranged on the evaporation side of the air conditioner, the first heat exchanger is an evaporator, and the first heat exchange fan is an evaporation fan.

13. The low noise air conditioner according to claim 12, characterized in that: The condensing side of the air conditioner includes a second heat exchange chamber, which is isolated from the first heat exchange chamber and the static pressure chamber; the second heat exchange chamber is connected to a second air flow inlet and a second air flow outlet, a condenser and a condensing fan are arranged inside the second heat exchange chamber, and the condenser is connected to the evaporator through a pipeline; The condensing fan sucks in the medium airflow through the second airflow inlet, and the medium airflow enters the condensing fan after passing through the condenser and is blown out by the condensing fan; The airflow outlet of the condensing fan is communicated with the second airflow outlet, and the medium airflow passes through the condensing fan and is blown out from the second airflow outlet.

14. The low noise air conditioner according to claim 13, characterized in that: It also includes a box body, in which the first heat exchange chamber, the second heat exchange chamber and the static pressure chamber are all placed; The second air flow inlet is arranged on the bottom surface, side surface or top surface of the box body; The second air flow outlet is arranged on the bottom surface, side surface or top surface of the box body; and the second air flow inlet and the second air flow outlet are arranged with a height difference in the height direction of the box body; The first heat exchange cavity is connected to a first air flow inlet, and the first air flow inlet is arranged on the side or top surface of the box body; The first air flow outlet is arranged on the side surface or the top surface of the box body, and the first air flow outlet includes a plurality of independent air outlets, and each of the air outlets is located on the same surface or different surfaces of the box body.

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